The Siemens Q115 is a 15-amp single-pole Type QP circuit breaker commonly used for bedroom lights, hallway lighting, and standard 120V outlet circuits wired with 14 AWG copper. Its QP plug-in design snaps onto the bus bar in compatible Siemens and Murray load centers, making it a direct replacement for worn or tripped branch breakers. The thermal-magnetic trip system responds to long-term overloads and also reacts instantly to short circuits for everyday residential protection. With a 10 kAIC interrupt rating and Siemens Lifetime Limited warranty, the Q115 is a dependable choice for routine panel maintenance and circuit additions.
What kind of circuits is the Siemens Q115 usually used for?
A 15-amp single-pole breaker is typically used for standard lighting circuits, bedroom receptacles, living room outlets, and other general-purpose 120V branch circuits wired with 14 AWG conductors. It is the common choice when the circuit load does not require a 20-amp breaker. Always match the breaker size to the wire gauge and the original circuit design.
How does the Q115 install into the panel?
The Q115 is a Type QP plug-in breaker, so it hooks onto the retaining rail and then presses onto the panel bus stab. Homeowners replacing an existing Siemens breaker should verify the panel label lists Type QP before installing it. Turn off the main breaker first, but remember the incoming service lugs remain energized.
What should I do if the Q115 trips and will not stay on?
Move the handle fully to OFF and then back to ON to reset it. If it trips again right away, the breaker is detecting an overload, short circuit, or device fault somewhere on that branch. Unplug loads and inspect the circuit before trying another reset.
Will the Q115 fit older Murray or Siemens load centers?
Yes, the Q115 is listed for Siemens residential panel families including ES, EQ, PL, E, P, W, HW, HPW, G, HG, SGF, SN, XG, and OG, and it also fits Murray panels. The safest check is still the panel directory label inside the deadfront. If your panel calls for Type QP, this breaker is the correct style.
# Siemens 15 Amp Single Pole Type QP Circuit Breaker (Q115) **Model:** `Q115` **Brand:** Siemens **Category:** Circuit Breaker > The Siemens Q115 is a 15-amp single-pole Type QP circuit breaker commonly used for bedroom lights, hallway lighting, and standard 120V outlet circuits wired with 14 AWG copper. Its QP plug-in design snaps onto the bus bar in compatible Siemens and Murray load centers, making it a direct replacement for worn or tripped branch breakers. The thermal-magnetic trip system responds to long-term overloads and also reacts instantly to short circuits for everyday residential protection. With a 10 kAIC interrupt rating and Siemens Lifetime Limited warranty, the Q115 is a dependable choice for routine panel maintenance and circuit additions. ## Specifications | Attribute | Value | |---|---| | Product Type | Circuit Breaker | | Poles | 1 | | Amperage | 15 | | Voltage Vac | 120 | | Interrupt Rating Ka | 10 | | Trip Type | Thermal-Magnetic | | Afci Protection | No | | Gfci Protection | No | | Self Test | No | | Plug On Neutral | No | | Wire Gauge Awg | 14-10 | | Compatible Panels | Siemens ES, EQ, PL, E, P, W, HW, HPW, G, HG, SGF, SN, XG, OG series; Murray panels | | Certifications | UL 489 | | Warranty | Lifetime Limited | ## What's Included - (1) Siemens Q115 Circuit Breaker Source: https://www.jaspecs.com/siemens/circuit-breaker/q115-siemens-15a-single-pole-circuit-breaker/